End stop member for separable fasteners



June 6, 1939. E. WITTENIBERG I 2,151,329

END STOP MEMBER FOR SEPARABLE FASTENERS Filed Sept. 11. 1957 INVENTOR 12m, W/r TENBER BY ATTORNEY Patented June 6, 1 939 7 PATENT OFFICE ;s. Claims.

Tl'ie presentinventibn relates to'separabl e fasteners"of thefslideh operated type and more particularly to end, stopmembers with which the stringers of such fasteners are provided for limiting the movement of the slider.

The stop'members fvvith which the present inly concerned" are arranged vement of th'esliderin v f'of "thejlatter whereby to prevent the slider frommoving' off the stringers'. Whenfthe'"stoprnembers are of the type which. enter "into thef slider channels, in the stringer closed position of the slider, they should be positioned fon'the's'triners so that they may 15 readily. enter'within th slider channels and also to permit'theffree movement of the slider in a direction to unmesh' the interlocking elements as well as in the directionoffstringer closed position. One obj ect of the present invention, therefore, is to provideend;stopflmembers with means for facilitating the'correct positioning of said mem hers iat'erallr rt str n er In securing the stoprriembersto the stringers, the opposed walls or wings of saidmembers are 25 pressed ,towaid each, other in, clamping engagemenu "with the cornea or beaded edges of the stringers. 'STop members of the construction heretofore utili zjed are'objectionable because when too mu'chjpres'sure' is applied to'the' stop members in 'clanipingtheni on the, stringers the beaded edges of the latter are frequently crushed result-.

' ingin an insecu'r iattachment'of the stop mom hers. ;Another ob ct of the present @invention is to eliminate" his disadvantage and for that 35 Pllrposeto. provide the stop members with means to "limitthe" movementoffthe'jopposite walls or wings of the swp mem erswware each other in securingthe stop frifieii' bers the stringers.

h I I h 'invention is to provide the stop,fnliei'nbrs with ean's'forimproving the secure ment o'fth'sto'p members to the stringers.

, Afurthe'r object of the'invention is generally tofinfiproye the construction of 7 end stop member'sQwhei'eby 'to'facilitatei theirattachment to the 45* stringers 'and-to1position them' correctly so as notto interfere with'th e: operation of "the slider l "fthe latter t0- either Stringer closi stringerppening positions. I

v g'rhe bo've dbje'ctsof the invention 'and other 56 objeetsfwliichmi'ght hereinafter appear will be clearly understood r 'm thefiollowing description considered refrence'to the] accompanying drawing.

' In t e drawing;

.55 1 isa fragmentaryplan view'of a separable fastener provided with end stop members embodying the present'inventioni V Fig, 2, is -a, fragmentary plan view, o'n'an enlarged scale, of one of'thestringers provided with 50 an end stop member of the present invention, said i ApplicationSeptember 11, 1937, Serial No. 163,331

stop member being shown partly in elevation and partly in section;

Fig. 3 is a sectional view on the line 3-3 of Fig. 2;

Fig. '4 is an enlarged perspective view of one of 5 the stop members before the latter is attached to the stringer;

Fig. 5 is a view of the open side of the stop member before the latter is attached to the stringer.

Referring now more particularly to the drawing, the fastener l0 comprises, as usual, a pair of stringers l2 having confronting corded or beaded edges I4 to which the interlocking ele-' ments I6 are secured. A slider 18 of any suitable construction is movable longitudinally of the stringers in engagement with the interlocking elements It for meshing and unmeshing the latter in closing and opening the fastener. End stop members 20 are secured to the stringers at the ends of the rows of interlocking elements for limiting the movement of the slider in stringer closed position.

The end stop members are made of suitable sheet metal and as here shown are U-shaped.

22. Elements 26 are integral with and project from theends of inner wall 24 and are disposed wholly within the channel of the stop member. The free ends 28 of said elements terminate a substantial distance inwardly of the outer edges 30 of the wings 22. When the stop member is attached to the stringer the free ends 28 of elemerits 26 engage the corded edges l4 and thus position the stop member correctly laterally of the stringers. Also when the walls 22 are compressed for securing thejst'op member to the stringer the elements 26 limit the movement of the walls 22 toward each other and thus prevent crushing of the beaded or corded edges of the stringers. Opposed inwardly pressed ribs 32 are formed in the walls 22 for gripping the corded edges of the stringers when the end stop members are clamped'thereon. Accordingly, the arrangenient is such that when the opposed walls 22 are compressed to the limit allowed by the elements 26 the ribs 32 extend slightly inwardly beyond the elements 26 for gripping the corded edges of the stringers. As illustrated in the drawing, the end stop members 20 are correctly positioned on the stringers when the outer surface of wall portion 24 is substantially in alignment with the outer ends of the interlocking elements l6 and when the free ends 30 of walls 22 are in alignment with the inner ends of said interlocking elements.

When the slider is in extreme stringer closing position said end stop members 20 are positioned preferably completely within the slider channels, at the wider end of the slider and hence are not visible in that position of the parts, although it is within the scope of the present invention to provide stop members which are only partially disposed within the slider channels when the slider is in extreme stringer closing position.

Thus, it is seen that the end stop members constructed as herein shown and described are Well adapted to accomplish the several objects of the' present invention. It will be understood, however, that the construction may be modified in certain respects without departing from the underlying idea of the invention. Therefore, I do not wish to be limited precisely to the construction herein shown or described, except as may be required by the appended claims considered with reference to the prior art.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. An end-stop for the slider of separable fasteners of the typecomprising opposed stringers provided with interlocking elements operated by said slider, said end-stop comprising a member having opposed spaced wings and an inner wall defining a channel, and two members, one at each end of the channel and each having an edge disposed between said inner wall and the edges of the opposed wings, said edges of said two membersbeing spaced equally from said inner wall and in position to be engaged bythe edge of the stringer received in said channel thereby to position the end-stop member laterally of the stringer.

2. An end-stop for the slider of separable fasteners of the type comprising opposed stringers provided with interlocking elements operated by said slider, said end-stop comprisinga member having opposed spaced wings and an inner wall defining a channel, and two members, one at each end'of the channel and each having an edge disposed between said inner wall and the edges of the opposed wings, said edges of said two members being spaced equally from said inner .wall and in position to be engaged by the edge of the stringer received in said channel thereby to position the end-stop member laterally of the stringer, said two members extending into'said channel and each being free from direct cdnnec-i tion with at least one of said opposed 'Wings whereby the latter can be compressed toward each other for, gripping the opposite sides of the stringer, said two members serving to limit the movement of said opposed wings toward each other when the stop-member is clamped onto the stringer.

3. An end-stop for the slider of separable fas teners of the type comprising opposed stringers provided with interlocking elements operated by said slider, said end-stop comprising a member having opposed spaced wings and an. inner wall defining a channel in which the edge'p'ortion of the stringer is received when the end-stop is attached thereto, said spaced wings terminating in edges spaced from said inner wall, and a member projecting from each end of said inner wall to-.'

ward said edges oftheopposed wingasaid pro"- jectingmembers terminating in edges'disposed teners of the type comprising opposed stringers provided with interlocking elements operated by said slider, said end-stop comprising a member havingopposed spaced wings and an inner wall defining a channel in which the edge portion of the stringer is received when the end-stop is attached thereto, said spaced wings terminating in edgesspacedfromsaid inner wall, and a member projectig from each end of said inner wall toward said edges of. the, opposed wings said projecting members extending into said channel and being free from direct connection with said wings and spaced from the inner surface of at least one of said wings whereby the latter can be compressed toward each other for gripping the opposite sides of the stringer, said projecting members serving to limit the movement of said wings toward each other when the stop-member is clamped onto the stringer.

5. An end-stop for the slider] of separable fasteners of the type comprising'opposed stringers provided with interlocking elements operated by said slider, said end-stop comprising a member having opposed spaced wingsan'd an inner wall defining achannol in which the edge portion of the stringer is received when the end-stop is attached thereto, said spaced wings terminating in edges spaced from said innerwall, and a member projecting from each end of said inner wall toward said edges of the opposed wings, said projecting membersterminating in edges disposed betweensaid inner wall and said edges of the opposed wings in equi-spaced relation from said inner wall in position to be engaged by the edge of the stringer thereby to position the end-stop member laterally of the stringer, said projecting members extending into said channel and spaced from the inner surface of at'ljeast one of said wings whereby the latter can be; compressed towardeach otherfor gripping the opposite sides of the stringer, said projecting members serving to limit the movement of said wings toward each.

in edges spaced from said inner wall, and a meme ber projecting from each end ofsaid inner Wall toward said edges of the opposed wings, said projecting members extending into said channel and being free from direct connection with said wings and spaced from the inner surface of at least one of said wings whereby the latter can becompressed toward each other for gripping the opposite sides of the stringer, said projecting members serving to limit the movement of said wings toward each other when the stop-member is clampedonto the stringer and inwardly projecting opposed ribs formed on said wings for gripping the stringer therebetween when the end-.

stop is clamped thereon.

ERICH WI'I'I'ENBERG. 

